Secure the Area & Protect Yourself
Step Back Immediately: Move away from the area and go back inside if you are still outside.
Close Windows & Doors: If the smell is strong enough, it could be a gaseous or airborne substance. Prevent it from entering your home.
Wash Thoroughly: If you think you may have been exposed, wash any skin that was uncovered and rinse your mouth with water. Remove your shoes and clothes near the door and wash them separately.
2. Call for Professional Help (This is Urgent)