Not long ago I was gifted two boxes of homebrew stuff by a guy who pulled it out of his Florida attic. Among other things it contained nine sealed, full Grolsch bottles of homebrew. Here's what we knew about that brew:
1) It had been brewed in 1994.
2) It had been brewed by relatively inexperienced college students.
3) THEY hadn't bothered to drink it in 1994, and
4) It had been sitting in a FLORIDA ATTIC for years.
I took a couple of the bottles to our homebrew club meeting, described the foregoing and asked for volunteers. Nearly everyone at the meeting chose to taste this stuff.
Not toxic. Not even distasteful. Thin, watery and flat with sherry overtones.
TASTE it.