Just thought I would share something that might be helpful for anyone who has a currently sneezy rat with no other apparent symptoms, as is the case with me. I got a great tip from my small animal vet when she called me back after I left a message with her clinic about one of my ratties:
One of my two boy rats, Wolfgang, has been sneezing much more than normal over the past several days, but he has no other symptoms, and he is active, eating, playing, no wet nose/eyes, etc. so I suspected it could be an allergen problem.
I double checked things that might be making him sneeze, such as perfume, soap, litter, all those things. Then I read on a post how during the winter, especially for those of us that live in cold climates (it is freezing cold here in Washington!) that when people start using their heaters in the winter, there can be a lot of dry air in the room and this can irritate a rattie's nose.
I read that by just putting out some jars or a bowl of water in front of your heat blower, it can help humidify the air and can ease up your rattie's sneezing. Over the past couple of days I have been doing this, and Wolfgang's sneezing is going down. Improved!
My vet confirmed this, and agreed that the water bowl in front of the heater can help a lot and also that there can be some nasty junk in the vents that blows out into the air and can cause rattie nose irriation, so a cleaning and vaccuming of the blower vent can also help. She also advised me on a safe dose of liquid children's Benadryl that I can safely give Wolfgang twice a day over a week's time and that should also help his allergy problem. Just thought I would share the info in case it helps anyone!