"I don't see myself as being a role model; I never wanted to step into those shoes," the actress, 29, said in a new interview with Dazed magazine.
Her comments came in the first interview since she stepped down as an Oxfam ambassador last month over her links with SodaStream.
"If that's a by-product of whatever image is projected on to me I don't feel responsible as an artist to give anyone that message. It's not my jam."
She continued, "How could I wake up every day and be a normal person if I was completely aware that my image was being manipulated on a global platform? How could I sleep?
"You have to have peace of mind. You've got to be able to protect those things. How else could you exist? You'd go crazy, anybody would go crazy."
Scarlett with her fiancé Romain Dauric
Last month, Scarlett stepped down as an Oxfam ambassador after featuring in a SuperBowl advert for SodaStream, an Israeli company operating in the occupied West Bank.
She said she had a "fundamental difference of opinion" with the charity, which opposes all trade from Israeli settlements because they say it is illegal and denies Palestinian rights.
Scarlett has a busy year ahead, with three films scheduled for release; Chef, Captain America: The Winter Soldier and Lucy. She might also start to plan her wedding to French fiancé Romain Dauric, who popped the question in August 2013.
"I'm very happy," Scarlett told People about Romain, 31, a journalist who manages a creative agency. "He's my buddy."
Explaining that they want to take their time planning the wedding, she added, "Being engaged is an exciting time to enjoy and to really savor."