RADS is an airways dysfunction syndrome caused by a sudden, massive exposure to an irritative chemical. RADS is considered a subtype of occupational asthma. RADS patient may cure within months, but RADS may also become a permanent disability. RUDS is a dysfunction syndrome in upper airways caused by exposure to an irritative chemical. It seems that in RUDS there are problems in olfactory function in addition to inflammation of upper airways. We present a patient, who was suddenly exposed to chemical vapours in her workplace. She had RADS-like symptoms and was diagnosed with RUDS.