So they inhaled it, but they are not aware of it.

They can be taken as tablets or capsules, be inhaled or injected.

(g) They offer versatile routes of application, because they can be ingested orally, sniffed, inhaled or injected

All night long she bent over the coat, never giving thought to the germs she had inhaled.

It can be inhaled ( quot snorting quot ), but can also be injected or applied directly to a mucous membrane.

Depleted uranium left radioactive poison dust which was easily inhaled or ingested and which caused many illnesses and genetic deformities.

Le Bouffant L, Daniel H, Henin J P, Martin J C, Normand C, Tichoux G, Trolard F (1987) Experimental study on long term effects of inhaled MMMF on the lungs of rats. Ann Occup Hyg, 31 765 790.

The combustion of petrol and diesel fuel causes emissions of fine particulates and hydrocarbons, including carcinogenic polycyclic aromatic hydrocarbons (PAH), while the combustion of coal releases arsenic, mercury and other heavy metals which are toxic to humans and animals if inhaled or swallowed.

49. In keeping with the administering Power s pledge to keep islanders fully informed of the health risks associated with the volcano, the United Kingdom s Chief Medical Officer, Sir Kenneth Calman, visited Montserrat from 21 to 23 September 1997 and issued a report on the hazards posed by volcanic ash, which contains crystobalite, a substance which can lead to silicosis if inhaled over a long period of time.29