I made my boyfriend cum really hard from smelling

I’ve been dating my boyfriend since the beginning of summer, and we just started having sex. He and I were messing around, and it was pretty spontaneous, so we were ripping each others' clothes off and everything.As we were having sex, I eventually was totally naked except for my socks and cheer sneakers.I didn’t think much of it, other than it looked kinda funny lol.I could see him staring at them a lot, but again, wasn’t really thinking about that during sex.After a little bit though, I could feel him getting the hardest I’ve ever seen him, and he was pumping me so hard I thought the bed was going to break lol.Then he got like all worked up and practically ripped off my socks and sneakers and pushed his face like buried in the bottoms of my feet and I could feel him sniffing really hard.He only did it for like 10 seconds and he cummed REALLY REALLY hard.It happened so fast that I didn’t have time to ask him what he was doing or process it, but I was NOT expecting that lol.He told me afterward that he has a foot fetish, and because they were sweaty from cheer practice and wearing my socks and sneakers all day, he said he couldn't help it because he's wanted to smell my sweaty feet since he met me and said he never squirted so much cum in his life.I think it's a little weird, but I'm not gonna lie...I kinda like the idea that something so kinky about me made him cum lol.