One of the things that is thought as 'bad' science is actually superseded theory. That is, theories that were widely accepted at one time but have become obsolete as we learn more on the subject.
Our first example is miasma. At one time it was thought that many diseases were brought about by miasma..or vapours. This may sound rather silly today, but the concept of germs would have been considered silly at the time. And there is an innate human factor involved. People tend to be uncomfortable in heavy fogs, where vision is limited and sounds changed.So it made logical sense in an odd way to thing there must be a reason for it..that is the spread of diseases.
Our first example is miasma. At one time it was thought that many diseases were brought about by miasma..or vapours. This may sound rather silly today, but the concept of germs would have been considered silly at the time. And there is an innate human factor involved. People tend to be uncomfortable in heavy fogs, where vision is limited and sounds changed.So it made logical sense in an odd way to thing there must be a reason for it..that is the spread of diseases.