Yes, you should use your inhaler prior to undergoing general anesthesia. You will want to expand your lungs prior to surgery. I recommend an in-office examination as well as a detailed discussion with a surgeon who you are comfortable with. Finally, make sure your surgeon is a Double-Board Certified Plastic Surgeon certified by the American Board of Plastic Surgery (ABPS), a member of the American Society of Plastic Surgery (ASPS) and the American Society of Aesthetic Plastic Surgery (ASAPS).Best,Dr. DesaiBeverly Hills Institute for Aesthetic Plastic SurgeryHarvard Educated, Beverly Hills & Miami Beach Trained, Double-Board Certified Plastic Surgeon