Cigarette ashes are toxic and are unsafe to consume
In this case Burns was limited to two lines, and filtered through fairly standard English, rather than the high-tar Scots in which much of his work was written: Flow gently, Sweet Afton, among thy green braes/Flow gently, Ill sing thee a song in thy praise. Carrolls launched the brand in 1919, in part to commemorate a local link with the poet, whose sister Agnes spent all her married life in Dundalk, and died there, leaving behind a local variant on the Burns Cottage in Ayrshire
Some of the smaller groups that have received tobacco money over the yearsthe National Black Police Association, the National Organization of Black Law Enforcement Executives, or NOBLE, the National Black Chamber of Commerce and the Congress of Racial Equality have opposed a ban, claiming it would trigger illicit trade in menthol cigarettes
For food items, it means to be on higher alert when you open the product, as it could have started to decay or go stale