Will I be able to go under general anesthesia for a BBL if I have asthma?

Yes, I have treated many patients that have asthma. More details of your history would be essential.  Best of luck.

Hello and thank you for the question. The Brazilian butt lift has become one of the most popular procedures today. The procedure is a combination of liposuction and fat transfer. The surgery is done under full anesthesia, and takes about 2+ hours to complete. Most patients will need 1-2 weeks off of work and about 1-2 months before you resume exercise. 
The success depends on both you and the plastic surgeon. Your underlying health, available fat, skin tightness and elasticity, and the size / shape of your buttocks will affect the quality of the outcome. The plastic surgeon's skills, experience and judgement in this procedure will also be key factors in the quality of your outcome. Remember that some of the fat that is transferred does not survive. Typically about 70% of the fat lasts long term.
Asthma if it is well controlled, is NOT a reason to prevent you from having surgery and general anesthesia. Preoperative medical clearance will be required by most surgery centers. It is important to have your asthma medications available and check to see that the inhaler has NOT expired. This is one of the most common reasons patients with asthma get into trouble. They have an asthma episode and reach for the inhaler only to find that it has expired and doesn't work or is empty. 
As always it is best to be healthy, no smoking, and to make sure your asthma and any other health care concerns you have are managed by your primary care doctor.
Best to you
#brazilianbuttlift