By it (the breath in the mouth) he distinguishes neither what is good nor what is bad-smelling, for that breath is free from evil. What we eat and drink with it supports the other vital breaths (i. e. the senses, such as smell, &c.) When at the time of death he does not find that breath (in the mouth, through which he eats and drinks and lives), then he departs. He opens the mouth at the time of death (as if wishing to eat).

In plain words: This breath in the mouth does not judge smells as good or bad, because it is free from evil. The food and drink it takes in keep all the senses alive. When a person is dying and can no longer find this breath, he leaves the body, and the mouth opens as if wanting to eat.