For every job, there is a type of person that is most suited for it. To be a nurse or a doctor, you should be smart and have compassion, to be a teacher you must love children and teaching, to be a mechanic you should probably be interested in the vehicle or equipment you are fixing. The same can be true for everyone, but it does take a special kind of person to deal with crimes and the clean up efforts after they occur.
For instance, if you want to be a part of a biohazard cleanup team, you should be able to handle stress and avoid letting it bother you. You will have to deal, at times, with people who are emotionally distraught, angry, and more. You have to know how to handle them. In other situations, you may have to deal with other types of biohazard waste that will require you to work hard and as quickly as possible.
To become a part of a team that handles cleanup, you do not have to have a formal educationally level, but you do have to go through a course study that talks to you about some of the things you will be dealing with on the job. This includes you learning how to protect yourself, your coworkers, and others within the area. You will learn about the equipment you may use, the chemicals you may come into contact with, and a lot more.
During the course study, you may have your first opportunity to smell some of the odors that you will come across as a result of your career choice. Not all of them will be pleasant and you must have a strong enough stomach to handle them. The theory is that if you are not able to handle them in school, you may not be able to handle them when you are dealing with the stress of your work environment.
If you want to take your career further, you can also go through training to handle more than crime scenes and hazmat material cleanup. You can take a short course to learn about cleaning up an area that has been used as an illegal drug lab. During this short lesson, you will learn more about handling all types of hazardous material. This will make it even easier for you to find a job that you can make good money at.