New MAN FROM U.N.C.L.E. ARMIE HAMMER’s chemical warfare on his wife!

THE LONE RANGER” hunk Armie Hammer is on a strict diet of caviar and eggs – and the side effects are stinking up his marriage!

Sources say the 27-year-old actor was put on the wacky diet by director Guy Ritchie, who cast the square-jawed heartthrob in his movie version of “The Man from U.N.C.L.E.”

“Guy is a major fitness nut, which is a hangover from his marriage to Madonna,” said an insider.

“He wants Armie in tip-top shape for the film, and he’s put him on a bizarre diet of chicken, eggs and caviar. As you can imagine, Armie’s suffering from excessive gas, and it’s driving his wife Elizabeth crazy!”

In the film, Hammer plays secret agent Illya Kuryakin, while his partner Napoleon Solo is played by Henry Cavill, the big-screen Superman in “Man of Steel.”

“Since he’ll be working alongside mega-muscly Henry, Armie doesn’t want to look anything less than his best,” added the insider.

“But friends say his wind problem is causing him some big-time embarrass­ment. Now Elizabeth doesn’t want to travel in the same car with him. She even banished him to the guest room one night!”

To make matters worse, the source says the “Social Network” star’s breath reeks of rotten eggs. “Every time Armie goes to kiss Elizabeth, she winces,” revealed the insider.

And it looks like Elizabeth won’t get a break, even after filming wraps, because Armie says his dream is to open up a cigar company.