“Olfactory” sounds like “ol’ factory” or “ole factory” (old factory), and there are jokes. “Ole-Factory: A factory that manufactures perfumes, or a factory constructed long ago” was posted on the newsgroup demon.local on January 24, 2008.
   
“Q: Where are good smells made? A: In the good ol’ factory” was posted on Twitter by Tim Cherepko on December 6, 2010. “Q: Where do they make the smells A: The ol factory” was posted on Twitter by Joe on November 9, 2018. “Where did they manufacture smells back in the day? At the Ol’ Factory” was posted on Reddit—Dadjokes on October 6, 2020. “Where do new smells come from? The Ol’ factory” was posted on Reddit—Dadjokes on August 31, 2021.
 
“It really smells around that ol’ factory” was posted on Reddit—Oneliners on March 26, 2022.
   
     
Wikipedia: Olfactory system
The olfactory system, or sense of smell, is the sensory system used for smelling (olfaction). Olfaction is one of the special senses, that have directly associated specific organs. Most mammals and reptiles have a main olfactory system and an accessory olfactory system. The main olfactory system detects airborne substances, while the accessory system senses fluid-phase stimuli.
   
Google Groups: demon.local 
Re: 1/24 Puns
Tim Bruening
Jan 24, 2008, 3:36:41 AM
Ole-Factory: A factory that manufactures perfumes, or a factory constructed long ago.
       
Twitter
Jonnie W.
@Jonnie_W
It smells like an ol’ factory in here. #hahaverypunny
11:18 AM · Oct 26, 2010·Twitter Web Client
 
Twitter
Tim Cherepko
@TENroaches
Q: Where are good smells made?
A: In the good ol’ factory.
10:30 PM · Dec 6, 2010·Twitter Web Client
         
Twitter
Scott Chan Sota
@jscottwilson
Smells like an ole’ factory in here.
7:12 PM · May 26, 2011·Tweetbot for iOS
     
Twitter
Gerry Wehr
@CountRockula
Smells like an ol’ factory in here.
11:51 AM · Aug 18, 2011·TweetCaster for Android
   
Twitter
overpaid mouse jiggler
@DoucheMcBaggus
The ol’ factory really smells.
1:00 PM · Sep 14, 2012·Twitter Web Client
   
Twitter
Rachel Leigh
@rachel_ke
It smells like an ol factory in here…. #nerdtweet #anatomyprobz
9:38 AM · Mar 7, 2013·Twitter for iPhone
 
Twitter
Scott Kirkpatrick
@CellaringScott
Q: What are the 2 most common places an expert in smells would work?
A: The Sniffsonian and The Ole Factory
12:36 AM · Apr 4, 2013·Twitter for iPhone
   
Twitter
mikey
@BeastMammoth
something smells weird down by the ol’ factory. That means trouble… I nose it.
3:02 PM · Jul 2, 2013·Twitter Web Client
   
Twitter
joshua cade
@Jyoshua
They manufacture smells in the ol’ factory.
10:29 AM · Mar 10, 2014·Twitter Web Client
 
Reddit—Puns
Posted by u/[deleted] March 16, 2015
They had to build a new factory…
The ol’ factory was starting to smell.
     
Twitter
Daniel J Cashman
@djcashman78
All the smells were produced in the ol’ factory.
12:05 AM · Apr 17, 2015·Twitter Web Client
   
Twitter
Auntie Raye-Raye
@fabulousraye
”“There sure are a lot of smells floating around the ol’ factory.”” http://goodreads.com/quotes/7245582-there-sure-are-a-lot-of-smells-floating-around-the
7:20 AM · Sep 3, 2015·Kindle
 
Reddit—Jokes
Posted by u/[deleted]  September 28, 2015
I saw an old coworker yesterday.
I asked him, “How’s the ol’ factory?” He told me it smells.
   
Twitter
ITaylor
@bagTaylor
The place where I work really smells… it’s an ole’ factory building #fb
3:33 PM · Oct 1, 2015·Twitter Web Client
     
Twitter
Ghost ft. Meat
@Screamingpope69
Q: Where do they make the smells
A: The ol factory
10:28 AM · Jul 5, 2017·Twitter for Android
   
Twitter
Monna Comedy
@MonnaComedy
What do you call a factory that produces smells? THE OL’ FACTORY. (Sorry that this joke stunk) 😀
12:40 AM · Oct 6, 2017·Twitter for iPhone
 
Twitter
Norm Dendler
@NoTapNorm
@bobhoss If a Mexican restaurant smells delicious, is it considered an olé factory?
3:48 AM · Oct 31, 2017·Twitter for iPhone
 
Reddit—Dadjokes
Posted by u/TheNextJen May 23, 2018
What do you call the place that produces smells
The ole factory
         
Twitter
Tore Sinding Bekkedal 🇺🇦
@toresbe
Do you know where smells come from? FROM THE OL FACTORY. 😀😀😀😀😀😀😀😀😀
7:50 AM · Aug 16, 2018·Twitter for Android
   
Twitter
DocHackenbush
@DocHackenbush
Smells are manufactured in the ol’ factory.
6:18 AM · Sep 23, 2018·Tweetbot for iΟS
   
Twitter
Joe
@Stoe_Jerioti
Where do they make smells?
Down at the ol’ factory.
2:10 PM · Nov 9, 2018·Twitter for iPhone
 
Reddit—Jokes
Posted by u/David179 July 18, 2019
What is that awful smell?
Oh, it’s just the ol’ factory.
   
Reddit—Dadjokes
Posted by u/Metostopholes October 6, 2020
Where did they manufacture smells back in the day?
At the Ol’ Factory.
     
Twitter
Audrey Day-Williams
@AudDayWilliams
Replying to @KristinJRusso
You know where smells come from?
The Ol’ factory.
I wish I were sorry, but I’m not, for which I am actually sorry.
2:58 PM · Oct 26, 2020·Twitter Web App
 
Reddit—Dadjokes
Posted by u/AcquaintanceLog August 31, 2021
Where do new smells come from?
The Ol’ factory.
 
Twitter
‘jokes’ of a guy 😂
@the_alphaman_
Where do new smells come from?
The Ol’ factory.
#humour
11:46 PM · Aug 31, 2021·Kipruto
   
Twitter
Miss Bigdickmegalodon
@bigdckmegalodon
A place that’s been around for years and creates smells? Ol’factory
1:40 PM · Feb 16, 2022·Twitter for Android
 
Reddit—Oneliners
Posted by u/big_gulpshuh March 26, 2022
It really smells around that ol’ factory.
COMMENTS
BobertoJoe
Olfactory, relating to your sense of smell
 
Twitter
tine
@justinexyap
where do smells come — from? where do smells come from? the ole factory 🤷🏼‍♀️😃
8:30 PM · Mar 26, 2022·Twitter for iPhone