How To Get Rid Of Body Odor And Bad Breath?

HI I'm graduate student working to get my master in environmental engineering ,i been taking adderall 30mg twice a day, and xanax 1mg (3-5) at night time ! to sleep , also i train brazilian jiu jitsu for last 4 years. Recently i start notice that my teammates are making inside jokes about my smell, like ( swedien ,fish,poopy ,you need a soup ) . Regarding to my body and mouth smell. Also they are avoiding rolling with me. As a person i shower before going to training and after coming back home, or twice even if i don't work out ,i use channel sport perfume for man for the last 5 years and other channel product where all are so good and you smell like a clean man , i brush my teeth 3 times a day, i drink almost one gallon of water per day ,recently i start taking vitamins D IU 2000 3 times per day also i take cranberry pills 3 times a week , i live in San Diego and i moved to USA 4 years ago , i never been told that i smell bad before ,what should i do to avoid this odor , on last thing i'm originally from Iraq so i like eating fruits salads ,i don't eat junk food unless its "IN -N -OUT". I really need some scientific advice about this embarrassing issue
PS : MY AGE IS 34
Wight is 196 lb
tall is 5,7 ft