[Animats]

It's "out-gassing", as the plasticizers leach out of the vinyl. The "new car smell".

[themodelplumber]

As an industrial specialist term, sure. I'm not sure if you've noticed but the term "off-gassing" now has a more general meaning & life of its own outside of that domain. I've heard people use it for situations up to and including stinky clothes and flatulence over the last few years.

[stevenhuang]

They mean the same. Aerospace commonly uses offgassing too: https://www.nasa.gov/centers/wstf/testing_and_analysis/mater...