Hazmat classes are usually offered at most community colleges. You can take the class if you work with an emergency service or if you're thinking about going into a field that works with chemicals or the potential of being in this kind of environment, such as a firefighter or a paramedic.
One of the things that you'll learn about is how to be prepared in any situation. You'll learn about the equipment that you'll need as well as the plan of action that you should have in place when you come across a hazmat situation. There are vehicles that you'll need to pay attention to as some of them could contain hazardous materials without the vehicle being marked. Another thing that you'll learn about is what happens in a fire. Most people die from the fumes in a fire instead of smoke inhalation. When plastics burn, cyanide is released, which is what kills people.
Any time a building blows up and someone is nearby, fumes can be released. The organs in the body collapse a small amount depending on how close you are to the building. Most of the injuries that you'll see with hazmat training involve lungs that are collapsed and eardrums that have busted if you're working on a building explosion. While working in a hazmat situation, you can come across everything from chemical spills to those that are biological. You'll learn about the proper ways that the spills can be cleaned as well as what to do to protect yourself so that you don't get anything on the skin or on your clothes. There are often suits that you will need to wear that allow you to breathe while still giving you the protection that you need. One of the places where you might find that you're doing a good bit of work is in a hospital. There are sometimes emergencies with infections that are spread and chemicals that are accidentally spilled. There are strict actions that need to take place during any situation, and the classes give details and practice scenarios where you can learn about the protocols that are needed.