The team found a variation in a gene called interleukin 8 (IL8 gene) occurred in babies with bronchiolitis more often than would normally be expected.

BBC: Gene key to baby chest infection

They added resveratrol to the samples and found it reduced the production of a particular cytokine, interleukin 8, by 94% in smokers' macrophages and by 88% in COPD macrophages.

BBC: NEWS | Health | Red wine 'may treat lung disease'