Plastic recycling can be dangerous for humans in a number of ways. 

1. Pollution: The process of recycling plastic can release harmful pollutants into the air and water.  

2. Toxic chemicals: Plastic recycling can also release toxic chemicals into the environment. 

3. Fire hazards: Plastic recycling facilities are often fire hazards. 

4. Worker safety: Workers in plastic recycling facilities are at risk of exposure to harmful chemicals and pollutants. 

5. Exposure to harmful chemicals. During the recycling process, 

plastics can release harmful chemicals into the air and water. 

6. Exposure to heavy metals. Some plastics contain heavy metals, such as lead and cadmium.