I am inclined to think alchohol would pose the least or no risk, especially if a quick dip, evaporates real quick.
TexasDon, no tongue in cheek, seriously, I got a watch that started draining battery following such a dip, I was being told the fluid damaged the circuit, some say a short circuit somewhere, fifteen years on I still don,t know the real cause. So I asked.
I still got the watch, kappa brand, swiss EB, metal gears and big jewels looks pretty too. Can I interest you in a trade off, goat for horse .
Regards