Near a bad smell, one might want to do Sh'ma, the Amidah, blessings, study, or think Torah. Is halacha equally strict about all five acts?
"Just as one separates oneself from excreta, urine, a foul odor, a corpse and the sight of nakedness for Kri'at Shema, so too, he should separate himself for Shemoneh Esreh". —Rambam. Hilchos ...
According to Double AA's answer on a related question, "it can't hurt" to say an extra Shema' later if you missed the Zeman (set time) for it. While it may be true to a certain extent that saying ...
According to this answer to a related question, the g'mara on Bava Kamma 82a requires reading torah at least every three days because we should never go longer than that without words of torah. But ...