As a professional that works hard and relax a little. The most dangerous thing is that there are dangerous chemicals that garbage (which may give you a disease, or may cause the deaths at all.)
As a professional, hard work and a little relaxation. What is the most dangerous Collection and disposal of hazardous chemicals (which might give you a disease. Or may have died).
a career hard work and relax a little. The most dangerous thing is. The garbage with dangerous chemicals (which you might have. Or it may cause death.).