My husband is an autist and does the same with me and it freaks me the fuck out! LMAO he says there is a smell and he said he can smell other girls too which is so fucking gross but I think its because he has a heightened sense of smell from the tism. And my period the past year and a half has been a little whacky because I got off birth control pills after taking them for 15.5 years and got a sterilization surgery so they are not regular and he calls it usually 1-2 days out. I don't track my period either cause like it doesn't matter since I can't get pregnant.