What is one thing that can easily kill you but everyone overlooks?

Source.

Farm equipment, a few yrs ago my co-worker's brother got killed helping somebody air up a back tire on a tractor & I believe it was a tire mount came off which struck him between his eyes.

Dude we had one of those last week in the area. She was a volunteer emt which made it sad. Also people that knew her had to pick up pieces of her

Bug bites

A real black widow, while cleaning up in barns or sheds, they will live in dark places, under tin, wood, etc..once bitten the poison attacks the heart, its a shiny black spider with long slender legs, and a red hourglass under her belly, she is not afraid of anything, and openly will stand her ground almost calling you to come to her with her front legs when disturbed !

Rusted nail....when injured by rusted nail and if it's not treated well....also farm tools like cutlasses too

Tobacco Smoking ... Its written Clearly on d packs that its dangerous to ones health yet people Smoke ....Hmmm

A brown recluse spider there bite has a chemical in it that is a very potent poison n can kill u if u do nit get medical treatment right away!

When I was about 10 yrs old this grown man who was working cotton field on a hot July afternoon, he decided to dive into a big ditch of cool water & died of a heart attack.

@TheHBKbigred: Yep I've heard of people getting seriously injured cause of a flat tire.