I absolutely LOVE the smell of a freezing cold room, always reminds me of a nice cold hotel room after a long day outside on vacation. :]
There are a few amazing triggers that I love because they remind me of happy times in my life or certain people or periods of time. Our senses are crazy as to what they can do and pick up, and our sense of smell never ceases to amaze me. I get the goosebumps sometimes when something smells EXACTLY like something else from my childhood did. Crazy stuff. Awesome.