Exposure from possible inhalation of dried serum?

I work in a medical testing lab.  I don't often work with patient samples directly, but today I was testing serum samples.  I had the lids off the tubes of serum for about 2 hours, and the serum that had splashed on the inside of the lids dried and flaked off onto the counterspace nearby. I didn't notice this until I was putting the lids back on the tubes.  

I'm worried that I might have inhaled some of these flakes of dried serum.  Ever since I finished my testing, I have been sneezing and feeling like I'm having an allergic reaction.  I'm very scared that I've been exposed to a bloodbourne pathogen.

[Teak]

Really? Discuss it with your Lab Supervisor. You might look for a new job before you ask your supervisor.