Definition of ESTRUS. : a regularly recurrent state of sexual excitability during which the female of most mammals will accept the male and is capable of conceiving: heat; also: a single occurrence of this state. See estrus defined for kids.
1. (medicine) any of various liquids sold as medicine (as by a travelling medicine show) but medically worthless. 2. communication (written or spoken) intended to deceive. Familiarity information: SNAKE OIL used as a noun is rare. Dictionary entry details.
Ozonated products, in general, have been dubbed by some as snake oil, having no medicinal effects and even contributing to the development of diseases. It is not safe for consumption and as such can also be seen as dangerous for kids and the elderly.