What happens if my dropship product malfunction, creates Disaster?

I am on my way to open an ecommerce dropship store on Survival kit, Tools, Accessories niche. There are some product that I must add are emergency fire starter, Survival knife.

Now what happens if a customer buy emergency fire starter from my store and it malfunctions and causes a fire breakout in my customer's house? What happens if a minor buys a knife from my store kill someone with this knife? For all these activities how much will I get affected? how avoid these troubles?

I live in India. I use my brothers credit card. And I want to dropship in USA using US dropshipper.

Now if i have to ask anything about it to my Dropshipper then what to ask? what questions to ask?

Thank you.