Is This A Good Way To Do This?

It could be that there's a certain scent that comes off of her skin that he finds a turn-off. It could be that after getting too close that his stomach "turns to water" and he feels like he's going to throw up. Maybe he has an accessory on his body (like a necklace, bracelet) that randomly starts itching or burning every time he gets close. The sound thing is okay, but it doesn't really appeal to me, at least just the sound... I like the aspect that when he gets to close he passes out. Maybe he merely just feels dizzy around her, and if he gets too close he blacks out. You can mix or match with this if you wanted to I guess.