WATCH: Woman forcibly removed from Southwest flight

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In a cellphone video that's sure to go viral, a woman is forcibly removed from a plane by law enforcement.

Her claims to have a fatal allergy is what sparked the incident.

The video shows a woman getting forcefully removed from a Southwest Airlines flight scheduled to leave Baltimore en route to Los Angeles Tuesday night.

Southwest says there were two dogs on the plane, an emotional support dog and a pet, and the woman told flight staff that she had a life-threatening pet allergy.

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When they asked her to provide a medical certificate, she couldn't. They then asked her several times to get off the plane. She wouldn't, which is why they called in law enforcement.

In a statement, Southwest said: “Our policy states that a Customer (without a medical certificate) may be denied boarding if they report a life-threatening allergic reaction and cannot travel safely with an animal onboard.”

Of this latest incident, Southwest says, "We publicly offer our apologies to this Customer for her experience and we will be contacting her directly to address her concerns."

Cox Media Group