I like to think that spores, compared to plant chemicals, affect someone slower, but the effects are more long-lasting.
An acute exposure to spores (i.e. by huffing certain parts of her body directly like the pussy, breasts or ass) will have immediate effect. However, someone that has already been exposed to spores for a while may suffer different symptoms to someone with spore-virginity.
It's possible to have trance-like sex with a hatter, and in doing so you release more spores that only sends you further down the rabbithole. You'll hallucinate her doing things to you, and won't be able to tell what's real from what's in your mind. You may genuinely believe 100 teacup sized hatters are molesting every inch of your body, or that a giant hatter has dropped you into her cleavage. You may genuinely believe that she has the power to make you cum with just a nod, or that you are having rough lotus sex on a raft drifting down a river of tea.