Where are you from?
In Germany I'd say people link cycling immediately with doping, but although they rarely talk about doping in other sports I think most people know very well that it exists everywhere. Doping is a big topic in the public service broadcasting especially, also in some print media.
There is some hypocrisy, though, for instance when it comes to German athletes like Gina Lückenkemper or Konstanze Klosterhalfen (young, pleasant, girlish women seem especially excluded). Well, after the end of Nike Oregon Klosterhalfen got talked about a bit, there were doubts, but her performances and improvements were outstanding before already and nobody really raised questions in the media. Also for instance there are never questions about the German biathletes or triathletes, which is ridiculous in my opinion, since both sports are very prone to doping.
Well, still, it's not like doping doesn't get talked about; whenever there is a big sports event like athletics championships, Tour de France, Olympia, or even WC in biathlon, there is usually a documentary, interviews with anti-doping experts, reports that raise some questions. Sometimes I wonder if Germany is even the country where this topic gets the most attention, at least it's probably one where the awareness is highest, partly due to dealing with the GDR doping and the victims of that system, partly due to individual works from guys like Hajo Seppelt (or even Fritz Sörgel) I think. There are also quite a lot of movies or TV series about doping. (When football is the milieu of a tv crime series for instance you can be sure doping is a topic...)
(There also was this study from Lotfi El Bousidi about doping among Champions league players, which in the end hardly got any attention because although about 15-30 percent of the asked players said they were doping at one point it was anonymous, so no names, so no scandal. Interestingly the number was 30% in Spain, 14-25 in Germany, which raises the question whether there is more doping in Spain or whether it is just more socially accepted so that it's easier for people to admit it to themselves.)
I think it's not so much that people here are not aware there is doping in other sports. It's just that many of them (especially the young) draw the conclusion to not watch any pro sports anymore, and the other half mostly pushes that topic aside (football viewers especially) and just don't care, they just want to be entertained.
Then there are people like my mother who isn't stupid and she would always support the idea there is doping in general in many sports, but whenever I say something about a certain athlete she is familiar with and probably has gotten used to (especially if it's a nice person) she's like "what, you really think that? what makes you think that?" and then I'm always in a dilemma, because part of her doesn't believe me and part of her does and I could push on and bring more arguments, but then she would be so disappointed and sad.
Well, at least that is my take about the situation here, others may see it differently.