He Said I Smell After Sex
Hearing this from a partner is one of the more crushing things that can happen. It's also almost always fixable — and usually not your fault.
Last updated: 2026-06-08
The pH science: why semen changes how you smell
Semen is alkaline (pH 7.2–8). Your vaginal flora is acidic (pH 3.8–4.5). When they mix, the rise in pH releases amines — the same compounds responsible for BV's fishy smell. This reaction is temporary and doesn't always mean infection.
If the smell persists beyond 24–48 hours
A brief odor after sex that clears by the next morning is usually a pH reaction. Smell that persists, or comes with discharge or itching, is a reason to get a BV/STI screen.
What to actually say back
You don't have to respond in the moment. A calm follow-up: 'I've looked into it — it's a common pH reaction. I'm seeing my doctor to rule out anything else.' That's it. No over-explaining.
The Fresh & Confident reset
The guide covers a 3-step pre-intimacy protocol that addresses external hygiene, pH, and discharge — so you feel confident regardless of who's in the room.