Oh no, so sorry
@CaminoDebrita! Bringing them home really is the worst case scenario.
Makes sense that you can pick them up in an airplane, bus or train – just think about all those people who got the bugs on the way, don't treat their stuff at all and then put it in public transportation like that.
On a more positive note, it might be simply a delayed bite reaction– it's possible you react to the bites days or even weeks later. So, it's possible it might still be a reaction to bites you got on the way (the bugs hide so well it's entirely possible you haven't seen any but still got bitten). If it's only that, you're "lucky", but I totally understand the obsessive cleaning. Did the same, without having any bites back home... I just got completely paranoid after this year's experience.
I put the backpack into the garbage (triple bagged). Washed my camino clothes on 70 degrees twice and then dried for over an hour, and then cooked them (like, boiling them in a pot!) for an hour and then again washed and dried (funny enough, at least half of the merino and the silk liner survived that treatment), and
still have them double bagged and don't dare to take them out of the bags. Still sometimes wake up in the middle of the night and look around the bed with flash lights to see if there aren't any bugs...
… all that three months after the return and no bites since then. Those tiny vampires can make you completely crazy.
Hope you got the situation under control with your cleaning, or, even better, it was just a delayed reaction. Wish you all the best.