Coolio appeared happy and healthy days before his death

Coolio's sudden death comes as a complete shock to fans who interacted with him less than a week before his passing, and they say he gave no indication he had any health issues.

TMZ obtained these photos and videos of the "Gangsta's Paradise" rapper traveling through Houston airport last Friday, and he was happy and in good spirits as he waved to giddy fans.

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Mika, the woman who stopped Coolio at the airport, tells TMZ...that she ran up to him to take a picture and he was friendly and very happy to take a few pictures, laughing and by being very engaging.

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We're told he even invited Mika and her girlfriends to come to his show that night in Cypress, Texas, and they exchanged numbers and texts. Coolio put women on the VIP guest list.

Coolio's last performance was with Vanilla Ice, Ice Remembe...