watercolor set of two human lungs: healthy and unhealhy variation.

abstract air anatomy art ash background ban banner biology blood cancer carcinoma cartoon chest cigarette clean clip clipart coronavirus coughing covid cut day design disease doodle drawing drawn elements emphysema graphic hand health healthy human icon illustration image infection isolated lifestyle lung lungs medical medicine metastasis organ painting patient pneumonia pollution poster pulmonary quitter regeneration respiratory risk set sick sign smoker smoking sticker stop stylized symptoms system template tobacco toxic treatment two unhealhy unhealthy variation watercolor watercolour white world