Badbreath again instantly after brushing

Hello, I have a bad breadth issue recently since 1 year. I brush 3 times a day, with all the oral hygiene of scaling and gargle (Colgate dental floss liquid). But still I have bad breadth issue, which re surfaces within 30 minutes of brushing. I did everything including deep cleaning and oral checkup.. but doc said there wasn't much in my teeth, hence my mouth is pretty clean.. Kindly tell me the reason behind this and suggest me some remedies.. Kindly note that, I have excessive sweating issue. My sweat too have bad odour. I even bath 3 times a day... But still when it sweats it is too much.. also I usually keep my mouth close.. Even I have a severe hair fall or say hair thinning issue.. don't know how much it has to do with bad breath.. but still I thot of sharing.. Thanks and regards