Please read and answer this seriously ?

Ok this is not meant to be funny, its a real problem i'm facing. At my school, these kids keep farting in my face. Like they do it everyday to me in the boys locker room. What can i do about this ? And if your going to say tell and adult, i have and they spoke with them and they still do it. This is bullshit because its gross and i want them to stop. Idk why they do that to me because i honestly at this point think i'm the only one this has ever happened to...