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Corowell Pass

Corowell offers an easy, rapid & low-cost way to objectively screen your sense of smell. Corowell is easy, fast & non-invasive. This is how it works: 1. Scan the QR Code inside the Corowell Ticket (sold separately) 2. Scratch the Scent Field 3. Smell it 4. Select the correct Scent in the app 5. A
Corowell Guard

The Corowell Guard app is the only way to check Corowell Passes for their current validity. This is how it works: 1. Open the app 2. Scan the Corowell Pass 3. One of the following three messages is displayed: a) "Pass ok" b) "Pass expired" c) "Pass invalid"