Not so much a smell...
The dog we had when I was a kid had the usual ability to emit deleterious dogfarts but also came with a secondary fire mode; farts which you could only just smell (though what you could smell of them was horrendous) but which gave you a headache and slight nausea. I vaguely remember them giving me a migraine on more than one occasion.
We never worked out what he was eating that caused this and, for bonus points, he almost always farted silently so the only warning we got was when he got up and left the room unexpectedly.
(squigbobble existed, Mon 20 Jan 2014, 17:50, 7 replies)

Click for deleterious and secondary fire
And for having a dog with the sense to be so thoroughly ashamed of what he'd done.
(SimianKid internet faffer, Mon 20 Jan 2014, 19:56, closed)

Secondary fire mode
as inspired by Unreal Tournament
(squigbobble existed, Tue 21 Jan 2014, 10:57, closed)

Dog noses are a zillion times more sensitive than ours.
It must be fucking horrible being a farty dog.
( Dr. Shambolic je suis charlie, Mon 20 Jan 2014, 20:03, closed)

Especially if it's licking it's arse
and lets one go at the same time
(Sir Tainley Barking Ezekiel 23:20, Tue 21 Jan 2014, 0:36, closed)

zinc phosphide?

(teebie jeebie, Tue 21 Jan 2014, 10:35, closed)

phosgene
would've been more pleasant.
(squigbobble existed, Tue 21 Jan 2014, 10:45, closed)

I once had a kittenz...
...that was horribly farty. Clear a whole room he could. Science Diet Kitten Fuel - or whatever the fuck it was called - was ultimately found to be the cause. Now he's old, fat and grumpy but no longer a furry Bhopal. Bless...
( venezuelan beaver cheese is mortally afraid of spoons, Wed 22 Jan 2014, 4:41, closed)