Well, my personal reaction is less scary. I'm not saying not scary, just less. In terms of increasing scary for pollution, I go radioactivity < chemical < biological - because the last can evolve, and it can infect people and you can be infected by the biological contamination without ever going near the source.......
I do also think that radioactivity has been turned into a bit of a horror-fest - not saying it isn't dangerous, just that it has taken over popular imagination in a way that chemical pollution hasn't, despite things like the Bohpal disaster, use of chemical weapons in the Middle east, asbestosis, heavy metal poisoning etc etc. Far more people have died of chemical pollution than of radioactivity - heck in that total you can count air pollution in the UK - that kills people every year, or contributes to their early death and that is happening right now.