You can configure the ESXi SNMP agent to filter out traps if you don't want your SNMP management software to receive those traps.
SNMP configuration for ESXi requires the ESXCLI command set. See Getting Started with vSphere Command-Line Interfaces for more information on how to access ESXCLI.
The traps identified by the specified OIDs are filtered out of the output of the SNMP agent, and are not sent to SNMP management software.