Texas A&M University Feb 20 2026 For adults with asthma, having fans, air purifiers or other ventilation and exhaust systems - especially in kitchens and bathrooms - is one of the best ways to reduce the risk of flare-ups at home. That's the key finding of a large, statewide survey of how household environments affect adults with asthma in Texas. Most studies of this type focus on children, but since most asthma cases in the U.S. are in adults, we looked at them and their indoor environment."