The handling and use of chemicals may be full dangerous. Only experts and chemists are qualified to try any to experiment mixing two or more kinds of chemicals. For example, someone might think that if they combine a cleaning product with other chemicals they will get a more effective product such as adding ammonia or vinegar to bleach, what they do not realize is that combining these cleaning materials together will release toxic chlorine or chloramine vapors that will burn your eyes and lungs. It is not only cleaning products that we should not mix together. Also, taking some medicines with alcohol is so risky and may cause injury to our bodies such as taking acetaminophen after a weekend bender could be fatal and lead to liver failure.