Combustible dusts are like computer viruses. Most people know they’re out there but don’t completely understand them. This makes it easy to underestimate the risks and fail to take the necessary precautions. As a result, when a severe incident occurs, it can be devastating.

In talking with people across the manufacturing spectrum, we’ve found that there are a lot of misconceptions about combustible dust, especially concerning its risks, the laws surrounding it, and what companies need to do to protect themselves.

Here are five things you probably don’t know about combustible dust . . . but should.