Why do my clip in hair extensions smell like moth balls after I shampooed them?

I was told that these were real human hair extensions which I am now thinking is a lie. I shampooed and conditioned them and they

smell so terrible. Why?

Why do my clip in hair extensions smell like moth balls after I shampooed them?

no there real,are you washing out the shampoo good and it could be the clip,it could be he moisture from the water stainhe clip like you know what rust does when it's in water it's going to rust and start smelling

Why do my clip in hair extensions smell like moth balls after I shampooed them?

I don't no why, ask som1 else, JK, LOL!