Friend or Foe?

¿Amigo o enemigo?
Friend or Foe?
When Sydney and I had put the horses in their stalls, we walked to the tack room, and opened the refrigerator, looking for a cold drink. I picked up a small glass container and peered through, not seeing a thing. I opened the container, looked inside, and before I knew it, I couldn't see. Sydney had not been looking at me when I opened it up; she had been looking through a book.
"Why did you open that!?"
"I thought there wasn't anything in it," I quickly replied.
"No, no, no! That's a gas. It's called Lindba gas. When you open it, which you're not s…