Shuls in Lakewood do not strictlyly contain the same group of people, e.g. people having relatives over for shabbos, chavrusas coming from across town to daven in the shul, amongst many other scenarios.
A scenario where it can leak: father davens in shul -> catches it from another member -> transfers to child who goes to camp/school -> child transfers to 10 other kids/teachers -> transfers it to their respective families -> fathers spread it in shul.