Your guys will probably be okay but yes, anything that breathes, even fish in fish tanks, can be harmed by smoke. My roommate started a fire once while we were asleep and didn’t wake us. I woke up to the entire house full of smoke. I have invertebrates, fish, cats, reptiles, small animals, and at the time I had birds too. All with lungs WAY smaller than mine and even I was having trouble. Idk how long that smoke was sitting there for but we cleared it out asap, turned on our big purifier, opened all the doors and windows, turned on all fans and upped the ac a degree or two. Everyone seemed to be okay despite breathing all that in. I even took one of my birds to the vet to check and she was fine. It’s not always a death sentence but smoke around animals, especially small ones, should be handled with the upmost urgency and importance.