Please clarify nostalgia?

Nostalgia is when you have a longing for the past. So, what is it called when you smell a certain smell that strongly reminds you of a certain event, but you don't really want it back? Every time I smell this kind of hairspray, it reminds me of when I would sit on my bed for hours and watch this movie while my mom got ready. but. It wasnt ahappy time in life, and it actually kind of makes me feel bad. I always would say "Ugh that hairspray makes me nostalgic, get it out!" So..what word do I use for it now?