Chemistry
The Latin word formica means ant. The name formic acid is derived from this Latin word because

this acid, in ancient times, was used to eliminate ant-hills
ants are attracted by the odour of this acid
this corrosive acid is secreted by ants to drive away their enemies
this acid was first obtained by the distillation of ants

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Chemistry
The open "Sigrees" or coal stoves often require fanning to sustain burning because of

Lack of oxygen in the surroundings of sigrees
Interrupted release of moisture from the material
Accumulation of smoke and dust over the sigrees
Tendency of carbon dioxide to form a layer along with dust smoke

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