When a good pipe goes sour, does it have to be discarded?

Even the best of pipes may occasionally turn sour for some unexplained reason. To make a briar sweet-smoking again, first clean the pipe thoroughly as described in Chapter 6. Then plug the stem with a pipe cleaner, fill the bowl with a good pipe-cleaning fluid from your pipe dealer, and let the pipe stand overnight. Then remove the liquid cleaner, dry the pipe thoroughly and let it stand another twenty-four hours. Now break in the pipe again using mild tobacco.

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