I inked a new pen with Pilot Blue-Black today. I noticed that the ink has a strong odor after I finished filling the pen. I have probably had this bottle of ink only about 6 months and I don't remember a strong smell the times I have used it before. I don't see anything growing in the ink. Is the strong odor normal for this ink or has it gone bad. I am considering flushing the pen and trying another ink. Recommendations?? Norm