Three major forces are involved in nosocomial infections. The first is antimicrobial use in hospitals and long-term care facilities. The increased concern about gram-negative bacilli infections in the 1970s to 1980s led to increased use of cephalosporin antibiotics.
In its yellow-brown liquid form, sulfur mustard doesn't smell like anything; the characteristic sweet aroma develops only as it evaporates. In general, blister agents like mustard gas smell pretty good. Another blister agent developed around the time of the First World War, lewisite, smells intensely of geraniums. A blister agent called phosgene oxime has an unpleasant, irritating smellâbut with hints of freshly mown hay. The related diphosgene smells like anise. Blood agents, which incapacitate or destroy your blood cells, come in a variety of flavors.
For vesiculation in geology, see vesicular texture. A blister is a small pocket of fluid within the upper layers of the skin, typically caused by forceful rubbing (friction), burning, freezing, chemical exposure or infection. Most blisters are filled with a clear fluid called serum or plasma.However, blisters can be filled with blood (known as blood blisters) or with pus (if they become infected). The word blister entered English in the 14th century.It came from the Middle Dutch bluyster, and was a modification of the Old French blostre which meant a leprous noduleâa rise in the skin due to leprosy.owever, blisters can be filled with blood (known as blood blisters) or with pus (if they become infected). The word blister entered English in the 14th century. It came from the Middle Dutch bluyster, and was a modification of the Old French blostre which meant a leprous noduleâa rise in the skin due to leprosy.