I work at a super small company & one of my co-workers brought in a mini-candle on Monday. It's a fall scent (smells like cloves and some spices) & at first I didn't mind but now the smell is really getting strong. 

I politely asked her if she would be cool with not lighting it because the scent is getting pretty intense & making me queasy (btw, I'm pregnant). I told her I didn't want to be a wet blanket because I know she's excited about the fall & just brought it in, but I'd appreciate it. She said "sure no problem." I told my husband and hes like "Really, you smell that? I think you're may be overreacting."  I'm like uhhh, I don't think I am rolleyes

I've never encountered someone lighting a candle at work before (b/c you're right it's usually against firecode), it's just so random.