When you refill your bathroom or toilet supplies, accidentally mixing chloride and acid-based materials releases a toxic gas that harms us. To prevent this from happening, cleaning products are labelled ‘dangerous to mix’. There’s a pixiv tag with a similar wording called ‘mazeruna kiken (dangerous to mix)’ where users express their disbelief at the jaw-dropping combinations and ask “Why did you mix them!?”. You might find interesting surprises if you choose to explore that tag.
Here’s our feature on ‘dangerous to mix’-tagged artwork. Some will make you wonder or even laugh!