Leviticus 11:31

11:31 These are the ones that are unclean to you among all the swarming things. Anyone who touches them when they die will be unclean until evening.

Leviticus 16:1

The Day of Atonement

16:1 The Lord spoke to Moses after the death of Aaron’s two sons when they approached the presence of the Lord and died,

Leviticus 11:32

11:32 Also, anything they fall on when they die will become unclean – any wood vessel or garment or article of leather or sackcloth. Any such vessel with which work is done must be immersed in water and will be unclean until the evening. Then it will become clean.