I love having my ass sniffed.. And slave has been trained to fully enjoy the scent of my perfect asshole..  With his head tightly strapped into my box, he has no choice but to sniff my ass while I tease him..  I edge and tease him endlessly while telling him to sniff deeper..  He tries so hard not to cum.. But my ass smells too good, and leads to being ruined with some post orgasm torment..