mm wrote:
How poisonous is RTV silicone sealant (room temperature
vulcanization?)?
(snip)
What's going on?

Is something wrong with black?

Well...... Condom manufacturers make them in a wide variety of
colors, but had to quit making them in black because of toxicity of the
black pigment in the latex. Maybe they had the same problem with RTV.
Have you tried RTV windshield sealant - it used to come in black.