My (26F) bf (35M) barely showers and it’s ruining our sex life

My (26F) boyfriend (35M) has been living together for a few months, together for over a year. In the past few weeks, I’ve realized how he barely showers, and it’s really turning me off. I’ll try to incite him to come shower with me, and he’ll get annoyed and rude if I insist. I’ll bring up that he worked out today and therefore should shower, and he’ll tell me that he’ll just shower tomorrow because he’ll go to the gym then too. He doesn’t always smell bad, but just knowing that he hasn’t showered in days doesn’t make me want to be intimate with him, so I haven’t. I know it’s taking a toll on our relationship because we’re not being intimate nearly as much as either of us would want. But I’m worried to tell him it’s because of his non shower habits because I don’t want him feeling hurt or getting mad at me for it…

How can I bring this up?