A person may be exposed to amounts of ammonia.Logical formLearned from2 sentences. Some (cleaning products) may contain ammonia.Logical formLearned from2 sentences. A person may breathe in ammonia.Logical formLearned from2 sentences. Ammonia may enter a body.Logical formLearned from2 sentences. Farmers may be exposed to ammonia.Logical formLearned from2 sentences. Ammonia may be released into air.Logical formLearned from2 sentences. (Skin contact) can be with ammonia.Logical formLearned from2 sentences. Ammonia may be used in smelling salts.Logical formLearned from2 sentences. A blast can be constituted-of-or-filled-with (ammonia fumes).Logical formLearned from2 sentences. Ammonia may remain above some level.Logical formLearned from2 sentences. Ammonia can be from vehicles.Logical formLearned from2 sentences. (Ammonia emissions) can be from sources.Logical formLearned from2 sentences. (Ammonia emission rates) may undergo determination.Logical formLearned from2 sentences. Air can be thick with a smell of ammonia.Logical formLearned from2 sentences. An ammonia can be recovered.Logical formLearned from2 sentences.