Jennifer Lawrence ate garlic or fish prior to kissing Liam Hemsworth in 'The Hunger Games: Mocking Jay - Part 1'.

The Hollywood stars were compelled to smooch for a scene in the new movie and Liam, 24, has revealed that his co-star went out of her way to make the experience unpleasant for him.

He revealed on 'The Tonight Show': ''She's one of my best friends, I love her, but if we had a kissing scene she would make a point of eating garlic or tuna fish.

''Any time I had to kiss Jennifer it was pretty uncomfortable.''

Meanwhile, Jennifer - who stars as Katniss Everdeen in the latest instalment of 'The Hunger Games' trilogy - claimed recently that she thinks it is harder for her to adjust to being famous because she had such a normal upbringing.

The 24-year-old actress told the Daily Mirror newspaper: ''I have perspective because I didn't grow up in this business. I'm not from Hollywood. I'm from Kentucky.

''Humour has helped me to survive all this.

''My dad taught me always to laugh at myself. I guess I can have an intellectual conversation for five minutes, but then I want to get back to laughing.''