As you can see by reading the other posts in this thread we are all different in our BP experience. We are different in onset, recovery and with every symptom though there are certainly similarities.
The sense of taste is affected by the paralysis of the CN VII. Some experience strange taste at onset, some during their paralysis and some as a residual. It isn't cause for worry....it's just part of having BP and absolutely normal whenever you get it.
As for suddenly experiencing this weeks after onset...my opinion is that things seem to work overtime or differently during recovery. Our muscles twitch or tighten and hurt, our eye blinks when we don't want it to,.....and sometimes our sense of taste goes a little crazy as the nerve that controls that area comes alive and that area begins to function.
I'm now just 2 weeks short of having BP for 6 years. Recently I had 3 days of a horrible taste in my mouth. I have to admit it frightened me, but it passed...just another residual that reminded me I need to relax and de-stress.