Why do I smell like a condom?

Okay so I have been with my boyfriend for four years. We used to live together but last month we both moved back to our parents house because landlord found out we got a puppy. Anywayyyyyy whenever I come to see my boyfriend, he’ll book a hotel for a night to sleep. I noticed after sex, I literally smelled like a condom which it throw me off, then I saw him again and we had sex everything was fine so I thought maybe it was his sperm messed up my ph balance. Few days later I went to see him and you know we did it again, please tell me why do I smell like condom again?!!!!!!!!! It really bothered me so much ! Because I realised I smelled like condom on and off recently which never happened to me before I mean we both have been together for four years right and we only used protection three times from beginning of relationship.

What does it mean? I actually don’t remember me smelling like a condom, it smell nothing whenever we have sex. I am definitely going to clinic for sure on Monday but right now please help me out.

Thanks !

Edit: Thank you guys responding. Tbh I couldn’t get a chance to smell his dick because I didn’t think of it. However yesterday I was at his parents house we had sex and this time I don’t smell like a condom, when we finished I stood up and I saw condom package on shelf. The way I froze and I tried not to react so I decided to play it cool and ask him few questions without accusing him. He kept saying it’s his brother he use it and he don’t sleep in this room???

I mean you may don’t sleep in this room but can take some???? I tried not to assume anything because my ph never smell funny.