Certain diseases can be transmitted by way of human poop (i.e. cholera), right? Well, could they not also be transmitted by fart? Aren’t farts just airbourne poop molecules?
“poop molecules” is a very vague term, but most of a fart, including the smelly parts, are gaseous. Unless you’re farting naked very little that isn’t a gas will spread beyond your buttock area.
This link, although it starts with a debunked fart video, describes an experiment with farting onto petri dishes. No growth when farting through pants. http://blogs.discovermagazine.com/seriouslyscience/2014/08/27/farts-carry-germs-depends-wearing-pants/#.WMv4WMnavIU
Just a single experiment, but indicative that plugging butts should not be the first step to limit the spread of disease.
I kinda want Cecil to answer this question—not because I want to see what he’d say about it, but because I want to see how Slug would illustrate it.
No, they aren’t. Farts are intestinal gases. “Airborne poop molecules” is a fair approximation of what you’re smelling in a recently used bathroom, however. Still won’t transmit disease. Sticking your face in the bowl when you flush will send a different kind of airborne poop molecule into your face, and that very well could transmit disease.
You have to understand that “poop transmits disease” is a shorthand for “certain microorganisms in poop cause disease.” Farts and volatile olfactory compounds don’t transmit disease-carrying microorganisms. Aerosolized-poop spray, however, can.
An aside, but I worked with a guy who was pathologically germophopic. A fart would send him out of the room for fear of breathing germs. “You know, a fart is like smelling the inside of someone’s colon,” he’d whine.
I wish I knew where to send him the link above. 
Infectious laughter.
If diseases were transmissible through flatulence, wouldn’t “I fart in your general direction” be prosecutable as a threat?
Perhaps not diseases, but I can assure the OP and others that in one household I am familiar with, farts expelled under bed covers, even inadvertently, can result in trauma ranging from contusions to hypothermia from being forced to sleep in another room.
The new fragrance from Chanel.
A lot like this I’d imagine: http://r1.washingtoncitypaper.com/files/base/scomm/wcp/image/2013/01/960w/_dev_pubsys_images_20130102_dope_130104_toilethover_01_257x257.jpg
I sincerely hope not. It’s one of my favorite insults. 
I’m damned sure that if I hadn’t evacuated the room when my dog was farting last night I would have DIED. I’m pretty sure ‘death by inhalation of something nasty’ constitutes a disease of some kind, if not technically then certainly practically!
Dunno what crawled up her arse and died, but thankfully she managed to fart out whatever it was, and smells sweeter today. 
Yeah, farts don’t seem to have the payload to spread disease.
Sharts on the other hand…
Now you tell me.