<human>: This happened a few years ago.

Me, my older brother and my older sister were walking to school while I was eating a poptart for breakfast. There was this house that was coming up that the trashcan was always disgusting smelling, So I ran a bit ahead of them and opened it up to throw my poptart crust in. The wind was just perfect so they got hit in the face with the trashcan smell..

The reaction was absolutely beautiful. My sister started dry heaving while me and my brother laughed, and then threw up.. Then my brother, seeing her throw up, puked too.. Then my sister seeing him throw up, threw up again.

Fortunately, I don't have a weak stomach, so I didn't throw up.. But I almost peed myself from laughing so hard.

Summarize the given text in a few sentences.
<bot>: Opened up a stinky trashcan, the smell made my sister puke, then my brother, then my sister again.