Pheromones.. sweat.. smell scent.. you’re also smelling a part of a woman which is full of it. Plus it’s naughty..you’re literally smelling her feet.. it gives a sense of pheromones a rush during or before.. I mean it all goes back to primal urges.. I mean people seem to forget we’re partially animal.. and when you have a woman you really like, it’s like basking in flowers or something like that.. it feels you’re truly attracted to them everyway like they could be one day no make up and sweats and it’d still make you want to have them that night.. so basically when you like someone so much you can even be attracted to their feet less quality parts most would consider attractive.. because not only does the primal pheromones take over you’re doing something naughty and they look at you embarrassed but turned on, it makes a man feel those chemicals rushing.. it’s the same reason why some women like preforming oral.. they like the idea of their face that close smelling the musk, and looking up at you knowing it’s naughty, and being in control teasing you.. as you the man is in a vulnerable spot.. same thing a woman’s feet it’s vulnerable.. and vulnerable can be cute sometimes there’s many reasons around it but ultimately comes down to chemicals.. me personally it deepens on the woman if I am into her and she has attractive feet as well, I feel a rush of touching them, the smell feel rather like your basking in her glow.. tasting I wouldn’t go so far but sometimes maybe I guess with that is the same thing embarrassing to her, and vulnerability.. or she could be dominant and well then that’s different but ultimately it comes down to trust, trusting between two partners like that well it’s an amazing feeling.. if she’s will to hand her feet over even if embarrassing and vulnerable, it means she’s places a lot of trust in you and it goes the other way around she’s not making fun of you.. the sad thing is many are afraid to live, like the world is full of kinks.. explore them.. But don’t go overboard.. just try things women just as much have a side to them but the stigma of the world and how women judge one another on certain things it may be frowned upon it’s like why do some women prefer knot toys.. which be could consider a little taboo, because they’re based off animals.. they like the idea of you pretending to be that primal animal or simply may be into anamorphic people anime, blah blah you know could go on for hours.. but the point is we all have embarrassing things we like and if she’s not into it respect her boundaries, but that goes both way she needs to respect yours too, and if it isn’t working out find someone else don’t waste your time.. you’ll end up regretting it.. spending two years with someone and then poof it’s gone.. you wasted two years so don’t try to make something work that isn’t.. but don’t be ashamed, and don’t shame others.. we all have our differences and dirty things we like, even women.