PFAS Vinyl Chloride Long-term Effects Health Risks PFAS Contamination Metal Contamination Nanoplastics PFAS Risks Soil Contamination Forever Chemicals PFAS Health Risks Plastic Pollution Agricultural Chemicals Agent Orange Pesticides Air Quality Health Hazards Public Health Concerns Safety Regulations Respiratory Issues Toxicology Plastic Chemicals PFOS Pollution Phthalates PFAS Health Effects Ethylene Oxide PFAS Exposure Respiratory Problems Flame Retardants Microplastics PFAS Chemicals Chloride Levels