About 6 days after staying a couple nights in a hotel, I noticed 3 possible bite marks in a row on my arm (about 1-2 inches apart) and one on my foot. The one on my foot is very itchy, while the ones on my arm do not itch. I did some reading here and it seems to say that it is possible even a week out that these could be from the hotel stay rather than from my own home. I had inspected the bed at the hotel and found nothing, but also took precautions to isolate my things from the bed, carpet and furniture while there. It did however take me several days after I got home before getting to the laundry.
In any case, after reading here I have inspected my bed/mattress/sheets at home (also the sofa) and found no visible signs. [I do live in a multi-unit building, so it could be possible they are coming from elsewhere rather than the hotel stay]. I am looking for help on how to proceed. I would like to vacuum today, however I have a small vac with no disposable bag. Is there a way to clean this after using? (alcohol?) Would climb-up monitoring be useful? If these actually are bites, is it likelier that they are from the hotel stay a week before, or are they newer? (this is probably unanswerable)