Hmm, does Red K have any permament effects? Red K always seems to be the total wild card. Sam's theory that it removes Clark's control of his powers only fits the third exposure. The first was clearly an emotional reaction, and the second is hard to fit with other known occurances, other than maybe making a laser did something. Red K is probably the thing in LnC that is least susceptible to scientific inquiry, it really acts according to plot and nothing else.
Thus, in this case Red K is making Clark paranoid, and possible causing him to hear voices. On the other hand with the number of people after Lois and Clark, at least considering the length of the list of potential enemies we saw in "Dead Lois Walking", can Clark be psychotically paranoid. It would seem any belief that people are out to get him would be well founded.
