Almost 1,000 people responded to a survey by European travel website Skyscanner.
Nearly half (42%) said the current legislation, which allows passengers to carry only 100 ml of most liquids in their carry-on luggage, is too restrictive, with 18% complaining that different airports seem to have different rules and that the regulations should be standardized.
Four percent of respondents admitted they knew the rules but purposely snuck liquids through - and got away with it.
The "100 ml rule" came into effect in 2006 after a terrorist plot to detonate liquid explosives on flights from the U.K. to Canada and the U.S. was discovered.