Can you get pigeon disease from a live/recently deceased pigeon? Or is it caught from old, moldy piles of pigeon poop?
There are a lot of diseases you CAN get from pigeons; ‘Pigeon Fancier’s Lung’ is a famous one. But I’ve had pet pidges for many years - homers and ferals - and have never had a problem. As with any animal, cleanliness and keeping the critter in good health/nutrition are very important.