Memories & Bubbles

Totally off topic, but...what smells or tastes bring back a memory lying dormant in your past?

Drank a can of Coke today. . .I do this about every 3 years when something other than coffee, tea, or water beckons. I poured it into a glass and took a sip before the bubbles had dissipated, causing a fine spray on my face (hey, they say caffeine and sugar are good for the skin, right?) The spray and the taste transported me back to a grade 8 field trip to Washington, D.C. The Coke was part of a brown bag lunch eaten under the trees by the National Mall within view of the Lincoln Memorial. The rest of the sack? Ham and cheese on a thick white bun slathered with mustard, a bag of chips, an apple, and a chocolate chip cookie...the requisite school-days meal. We thought the best part of the trip was...mind you, not the amazing history contained within the District of Columbia...the comfy air-conditioned coach buses we got to ride for a day instead of the big yellow bus.