Hey
If you are leery about writing smut for this then you don’t have to do it. I mean I’m assuming that Belle can transform between human and dragon, so while she’s human she and Rush can fall in love and have all the smut, but if that’s not right for the story, then it’s not right. Ultimately I want you to enjoy writing this fic and to be comfortable with it.
Sex pollen actually never crossed my mind. I’m not fond of that trope anyway because of all the implicit consent issues. So good to know! Anyway I’m glad that knowing the vagaries of the English language aren’t unique is reassuring for you. I hope you are having a good week and that the fic behaves itself 🙂