How those aboard the Titanic tourist sub could survive in low oxygen

OK ones: -Zinc oxide -Titanium dioxide (but avoid nanoparticles) -Diethylamino hydroxybenzoyl -Hexyl benzoate (DHHB) -Bis-ethylhexyloxyphenol methoxyphenyl triazine, bemotrizinol, anisotriazine Avoid at all costs: These UV filters are endocrine disruptors. They can negatively affect your testicles, thyroid, ovaries and uterus, - avobenzone, butyl methoxy-dibenzoyl-methane - Benzophenone-1 - Benzophenone-2 - 3-Benzylidene Camphor - 4-Methylbenzylidene Camphor - octocrylene - oxybenzone, benzophen