Introduction:
Find out about public opinion on exposure to secondhand smoke (SHS) and on the regulatory measures for tobacco consumption and smoke-free spaces in Spain.

Material and Methods:
Opinion survey through voluntary completion.

Results:
6,302 surveys were collected. 83.7% were non-smokers (48.7% never smoked, 35% were ex-smokers) and 16.3% were smokers (9.9% daily and 6.4% occasionally). By gender, 15.2% of women and 19% of men were smokers. We detected a high perception of exposure to SHS (84.2%), mainly on the terraces of bars and restaurants (73%) and during recreational activities in outdoor spaces (45.8%). This perception varies according to tobacco consumption: non-smokers and ex-smokers perceive this exposure more (80.6% and 71.8%, respectively) than smokers (52.7%). It also occurs in recreational activities in outdoor spaces: 55% of non-smokers and 40.9% of ex-smokers report exposure to SHS compared to 28.8% of smokers. Regarding the regulations governing tobacco consumption on the bar terraces, 63.4% of non-smokers and 58.8% of ex-smokers consider that it is frequently violated. In this sense, 72% of respondents would support not smoking on bar terraces and up to 28.8% would extend this restriction to at least 8 meters around them. Most of the respondents (85,5%) support the need to expand smoke-free legislation beyond bar terraces: to outdoor public places (56,8% of respondents), to beaches (54%), to private cars (43,6%) and even on the street (24,2%). When we ask about what measures would be recommended to reduce tobacco consumption among the population, 81.5% would intensify educational measures such as school programs and awareness campaigns in the media, 59.2% would eliminate surreptitious advertising in cinema, television, influencers, etc., 56.8% would regulate advertising and smoke-free spaces to new devices such as e-cigs, heated tobacco devices and hookahs, 47.3% would increase the price of tobacco and 41.7% would finance treatments. Only 14.4% would recommend plain packaging as a regulatory measure.

Conclusions:
There is still high exposure to secondhand smoke in the Spanish population. Currently, the extension of the smoke-free spaces policies in Spain would be strongly supported by the majority of the general population.