Firefighters were alerted when the smell of smoke was detected in the Louth area.
They were called to Brackenborough Road, Louth, at 10.30pm last night.
Although a search of the property was carried out, no fire was found.
A few minutes earlier they were called to Lincoln Road in Welton Le Wold for the same reason.
Lincolnshire Fire and Rescue tweeted that atmospheric conditions had been mistaken for smoke.