FileMaker can not import from a ODBC, only FileMaker Pro can do that.
Much better is if you setup a ESS from your ODBC data source and then use the table as a native FM table inside your solution
FileMaker Server can also "import" from SQL. If the FMGo has a connection to the FMServer, then it can be read as 'imported' and not a direct connect to SQL. FMS can also have the data as "ESS", but that's a connection via ODBC also and FMGo would connect to FMServer, not the SQL.