they do have a smell...i use an air purifyer in my sons room. i have learned to actually love the smell, but it isnt awful. if fed properly, on a right diet, and cage items cleaned, but not obsessively as the male will make it worse if he is not neutered, they dont have a smell anything compared to a ferret. if that makes sense. mommy just had her joeys. i'll have to check if they are male, female, or both of one sex. their joeys go for 200.00 a piece usually. these are noprmal greys. you can not interbreed parental lines. i dont smell much and i hold them all the time and as obsessive about germs as i am....i have wanted to go ahead and get a leucistic glider. they run from 2200 dollars and breed maybe 4 times a year, each joey being that much when sold. if you have three breeding females, you neeed to get usda licensed but really easy. there are different color variations, white faced, cinnamon(redder) leucist...leucistic het. white tailes, blondes, cremos, mosaics...i want..lol...and a few others i may be missing. i love them. nobody can smell them when outside my sons' room and when inside most have said it wasnt bad at all. i clean out the poop tray lol every other day. give them a fresh clean sleeping pouch once a week and alternate between cleaning toys. I think a dirty wet towel could knock me wayyyy off my feet compared to their smell. somewhere near the lines of a hampster/guinea pig i'd say...not anything near a ferret. i'll post pics of the babies as soon as i can. they arent born hairless like mice out of the pouch. they look like shaved mom and dad with peach fuzz full of hair. adorable! i wouldnt keep smelly animals in my house to be honest. they are great. but not a pet for everyone. they are an exotic and very expensive upkeep sometimes and also new cage toys etc. high demand for them though. just look at craigslist. unfortunately a lot on there wont be healthy:( kristy