[ShrimpBurrito]

Yes, the absorption system is ammonia base. In addition to ammonia, it contains hydrogen, and I was also led to believe it contained hydrogen sulfide to protect the tubing from being oxidized by the ammonia. But perhaps I don't have good info, and furthermore, I've never smelled one leak.

In any event, even if the fridge had a leak, I doubt you'd smell it EVERY TIME you turned the fridge on. I would think it would be a one-time event. Again, my speculation.

Dave