Ugh....the smell of someone with body odor that does not use hygienic products is insufferable. I often feel sorry for these people because I think they must not know they smell so bad or surely they would fix the problem. It's good you became aware rather quickly and fixed the problem before offending too many others. I recall some chronically odiferous male teachers (mainly priests) that obviously never used antiperspirant. It was hard when they leaned over me to help me with a math problem 😖