Help, my first date!

Hi there! Im bisexual and i had sex with a man yeaars ago(we where sex friends, never date) , i loved it! But then i tried to date a guy that was too fast for me and basically maked me feel as everyman will be the same, since then i only dated women.Now i have a date with this guy and im go to sleep, wink wink, in his house after the date but i have a few questions...How do i make sure of been completely clean down there (butt lol) any advise? I dont wanna be up during sex (dont know the exact word)I think he smokes and i hate smoke... how can i deal with this? If u smoke, will u feel insulted if i ask you not to smoke during the, probably long, date?Im planning to buy lots of mint gum lol...