This indistinct but annoying symptom is
linked with carbon monoxide withdrawal. It gives a sense of being in
"another dimension." It can include changes in distance and space
perception, a floating feeling, and a total lack of concentration. Remember
that carbon monoxide is a deadly poison - it is a good thing to get out of your
system.
How long will this last? The first few weeks after quitting.
Tips to help: Plan your workload to account for your temporary lack of
concentration. Avoid additional stress during the first few weeks.