Im still here and suffered solvent inhalation problems quite often whilst hand sovent cleaning suites, over 20 years ago. It was after my last one that I decided not to solvent clean again. The room only had a tiny top window, offering hardly any ventilation at all. By the time I got to the last chair my head was spinning and I had to run for it when suddenly my tongue started to repidly vibrate. I grabbed a few lung fulls of fresh air, and dashed back in for a final finish off. I told the custy not to allow any naked flames in that room for at least 24 hours.
I have also had similar symptoms as described when applying solvent protector without a respirator, but it does wear off without any permanent efffffffffeeeeccccttttts.
Dave.