49ers' George Kittle jokes he 'considered retirement' after NFL memo bans substance he uses for gameday boost

San Francisco 49ers tight end George Kittle crashed his teammate Fred Warner’s interview on Tuesday to air out a grievance he has with the league. 

The league informed all teams of a smelling salts ban before and during all NFL games, and the do-it-all tight end from the Bay Area is not happy. 

"I honestly just came up here to air a grievance," Kittle said on NFL Network. "Our team got a memo today that smelling salts and ammonia packets were made illegal in the NFL, and I've been distraught all day."

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Kittle said he’s a regular user of smelling salts, which gives him a boost of energy, before offensive drives. 

"I miss those al...