Well, you learn something new every day! I did not know you could use Acetone on styrene. I knew of it being used in the forties/fifties for sticking together cellulose based kits as described by an old modeller friend, but not that it had a similar effect on styrene plastics.
I learnt that during 'Ketosis' where the body breaks down fats, the body makes acetone and it can cause kidney failure.