I have an experiment at work that is generating gaseous hydroflouric acid at 800 degrees F. It's inside a triple containment system that takes a full day to set up and take apart, and we have all sorts of quality checks to validate that it is safe to access and has been fully titrated after the experiment has run. We accidentally ruined a very expensive ion chromatography machine a few weeks ago... Acid gasses are just no fun to work with.

I bought a light HF acid (rust remover) so I can properly clean titanium parts before anodizing. Worked like a charm...

just don't let any of it get on your skin. only takes a splash to land you in intensive care.